[Amps] Amps Digest, Vol 106, Issue 7

[Dave]

I have to ask the obvious question, as I think I might have missed 
something here...

Why remove the plate current meter?

If just for the extra bit of output you get, remember.

"Power is nothing without control"..

There might be a better place to wire it in, so that it won't affect the 
tube bias as much as it might now.  Not knowing the schematic, I can't 
say for sure.

73.

Dave G0WBX.


> ------------------------------
> 
> Message: 9
> Date: Tue, 11 Oct 2011 08:08:14 -0400 (EDT)
> From: TexasRF at aol.com
> Subject: Re: [Amps] meter shunt again
> To: kc5gtt at gmail.com, amps at contesting.com
> Message-ID: <4fe2a.d6366de.3bc58bae at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
> 
> Carey, if the metering circuit is in the cathode lead it can add some bias
>  voltage which will lower the tube gain. You might check the circuit
> wiring to  make sure the meter is between B- and the point that the grid
> meter and cathode  bias are connected.
> 
> 73,
> Gerald K5GW
> 
> 
> 
> In a message dated 10/10/2011 10:37:06 P.M. Central Daylight Time,  
> kc5gtt at gmail.com writes:
> 
> man  these pesky shunts. ok now should a meter shunt value have any effect
> on the  output? i am not seeing why it should. but it is. also if i remove
> the shunt  the cuttoff resistor blows. i feel i have a loop of some kind.
> i shoud be able  to bypass the plate current meter all together and still
> have output.  right??
> 
> Carey